<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			h1 {
				width: 600px;
				height: 40px;
				font-size: 36px;
				line-height: 40px;
				margin: 0 auto;
				border: 1px solid red;
			}
		</style>
	</head>
	<body>
		<h1 id="welcome">欢迎来到千锋教育成都校区学习&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</h1>
		<script>
			let content = '马化腾，fuck you, 操你大爷，日你二爷'
			// let pattern = new RegExp('马化腾|[日操]', 'g')
			let pattern = /fuck|马化腾|[日操]/gi
			content = content.replace(pattern, '*')
			alert(content)
			const welcome = document.getElementById('welcome')
			function move() {
				let str = welcome.textContent
				str = str.substring(1) + str.charAt(0)
				welcome.textContent = str
			}
			setInterval(move, 500)
		</script>
	</body>
</html>
